Dual range front sight



United States Patent DUAL RANGE FRONT srorrr Archie Leon Simmons,Kilgore, Tcx., and Walter H. Womack, Shreveport, La.; said Simmonsasslgnor to said Womack Filed Mar. 25, 1958, Ser. No. 723,737

3 Claims. (CI. 33-58) This invention relates to adjustable sights suchas used on small bore match rifles, and in particular a front sightmounted on and extended from the muzzle end of a rifle barrel whereinthe distance between the sight at the inner end of the barrel and stockis constant thereby increasing the accuracy in aiming the gun at atarget.

The purpose of this invention is to provide means for adjusting theangle of a rifle barrel to compensate for different distances withoutchanging the distance between the axis of the barrel or line of sightand the check of a person firing the rifle.

Conventional adjustable sights are positioned on the rear of a riflebarrel and in elevating and lowering the sight at this point thedistance between the cheek piece of the stock and the line of sight ischanged making it necessary for the person firing the rifle to adjustthe position of his cheek upon the stock. Changing his face in relationto the conventional cheekpiece of the rifle is difiicult resulting ininaccuracy in firing. With this thought in mind this inventioncontemplates an adjustable front sight whereby the distance of the lineof sight from the cheekpiece of the stock of the firearm remainsconstant whereby the firearm is held with greater comfort and greateraccuracy is obtained in firing.

The object of this invention is, therefore, to provide means foradjusting the sight of a firearm at the front or muzzle end of thebarrel instead of at the rear end thereof.

Another object of the invention is to provide an adjustable front sightfor a firearm in which the device is designed to be used on firearms nowin use without changing parts thereof.

Another important object of the invention is to provide means forincreasing the distance between the sights of a rifle in order toincrease the accuracy of sighting.

A further objectof the invention is to provide an improved front sightfor small bore match rifles to increase accuracy in sighting and also toimprove comfort in firing in which the device is of a simple andeconomical construction.

With these and other objects and advantages in view the inventionembodies a tubular sight, having mounting lugs on the rear end thereoffor mounting the sight on the muzzle end of a rifle and a disc having anopening eccentrically positioned therein carried by a sleeve rotatablymounted in the end of the tube and having a knurled end to facilitateturning by hand to adjust the position of the opening.

Other features and advantages of the invention will appear from thefollowing description taken in connection with the drawing, wherein:

Figure 1 is a side elevational view illustrating the position of theimproved compensating front sight on the barrel of a firearm.

Figure 2 is a longitudinal section through the extended end of the frontsight with part of the outer casing or tube broken away showing a discholding cylinder in elevation, the parts being shown on an enlargedscale.

2,946,126 Patented July 26., 1960 Figure 3 is a cross section throughthe front sight taken on line 33 of Figure 2, showing a squirrel on thedisc of the sight and showing the sight opening in the upper positionwith the thick side of the cylinder or sleeve extended downwardly.

Figure 4 is a longitudinal section through the front sight showing theopening through the disc in the lower position and in which the thickside of the sleeve in which the disc is mounted is positioned on theupper surface thereof.

Figure 5 is a cross section taken on line 55 of Figure 4 also showing ananimal depicted on the disc of the sight and in which the animal islocated at a greater distance than that of the animal shown in Figure 3.

Figure 6 is a plan view of the front sight assembly taken on line 6-6 ofFigure 2 showing the openings or windows in the tube through which theyards, such as 50 and are displayed designating the position of theopening through the disc, such as being set for 50 yards.

Figure 7 is a plan view similar to that shown in Figure 6, taken on line77 of Figure 4 showing the disc set for 100 yards, and with the discopening in the position shown in Figure 5.

Figure 8 is a diagrammatic view showing a line of sight from an eyethrough the opening in the disc with the opening in the disc in theupper position and from the opening of the disc to a target. In thisposition the axis of the barrel of the firearm is inclined upwardlywhereby the projectile follows an upwardly disposed curve such as wouldresult in firing at 100 yards.

Figure 9 is a view similar to that shown in Figure 8 illustrating therelative positions of the parts with the front sight set for firing at50 yards wherein the opening through the disc of the front sight ispositioned above the center.

Referring now to the drawing wherein like reference characters denotecorresponding parts the improved front sight for small bore match riflesof this invention includes an elongated tube 10 having spaced mountinglugs 11 and 12 on the rear portion thereof, a sleeve 13 supported ineccentric mounting rings 14 and 15, a disc 16 having a sight opening 17therein secured against a sealing ring 18 by a bushing 19 threaded inthe outer end of the eccentric ring 14 and having a collar 20 with aknurled outer surface on the extended end, a gripping ring 21 having aknurled outer surface on the extended end of the sleeve 13, and a locknut 22 threaded on the outer surface of the tube 10 and having aninwardly extended annular flange 23 positioned over the collar 24 at theinner end of the gripping ring 21 and whereby the unit including thesleeve 13, eccentric rings 14 and 15, disc 16 and bushing 19 are securedin the forward end of the tube 10.

The upper surface of the tube 10 is provided with an opening or window25 having a pointer 26 therein whereby indicia such as the numerals 50and 100 may be displayed designating the position of the sleeve so thata person using the rifle may readily ascertain the yardage to which theopening 17 is set, such as 50 yards with the opening in the positionshown in Figure 3, or 100 yards with the opening in the position shownin Figure 5. The opening may be adjusted to any suitable number of yardsbetween 50 and 100 yards, as may be desired.

The lugs 11 and 12 are provided with set screws 27 and 28 by which thefront sight may be secured to mounting lugs 29 and 30 on the barrel 31extended from the stock 32 of the rifle and, as shown in Figures 3 and 5the lugs 11 and 12 are provided with dove-tail slots 33 that slide oversimilarly shaped tongues on the mounting ele ments 29 and 30. The setscrews 27 and 28 are provided with lock nuts 34 having knurled outersurfaces for securing the set screws in position of locking or clampingthe front sight on the tongues of the mounting elements.

As illustrated in Figures 1 and 7 the distance from the cheekpiece orsurface of the stock of the rifle to the line of sight 35 is constantand with the opening 17 of the disc 16 positioned above the center, asillustrated in Figure 3, the muzzle of the barrel will be inclineddownwardly whereas with the opening below the center, as shown in Figurethe axis of the barrel will be inclined upwardly.

The front sight assembly including the sleeve 13, eccentric collars 14and 15, disc 16 and bushing 19 is inserted in the end of the tube andsecured in position thereof by the lock nut 22, the flange 23 of whichlocks the collar 24 against the end of the tube 10 and the parts areretained in adjusted positions by the lock nut. To adjust the positionof the opening 17 of the disc the lock nut 22 is rotated in a counterclockwise direction loosening the sleeve 13 whereby the sleeve is turnedto adjust the position of the opening 17 and with the opening in theposition desired the lock nut 22 is turned in a clockwise direction tolock the parts in the adjusted positions.

It will be understood that modifications, within the scope of theappended claims, may be made in the design and arrangement of the partswithout departing from the spirit of the invention.

What is claimed is:

1. A front sight for a firearm having a barrel extended from a stockcomprising spaced tongues positioned on the upper surface of theextended end of the barrel, an elongated tube having spaced lugspositioned to correspond with the tongues on the upper surface of thebarrel, means for clamping the lugs on said tongues, a sleeve mounted byeccentric rings in the extended end of the tube, a disc having a sightopening therein positioned in the sleeve in abutting relation with oneof said rings, a bushing having a collar threaded on said one ring inabutting relation to said disc, a gripping ring mounted on said sleeve,and a lock nut threaded on the tube and positioned in abutting relationto said gripping ring to lock the sleeve in adjusted positions in thetube.

2. In a front sight for a firearm, the combination which .4 comprises abarrel extended from the stock, spaced tongues positioned on the uppersurface of the extended end of the barrel, a tube having mounting lugson the under surface and positioned to coact with the tongues of thebarrel for supporting the tube in the position extended beyond the endof the barrel, a sleeve having eccentric rings on ends thereofpositioned in the extended end of the tube, a disc having an openingtherein secured in the sleeve, and means for locking the sleeve inadjusted positions in the tube, said locking means comprising a grippingring having a knurled outer surface and a collar on one end thereof anda lock nut having a knurled outer surface and an annular flange thereonthat is positioned over the collar on said gripping ring.

3. In a front sight for a firearm, the combination which comprises abarrel having spaced tongues extended upwardly from the muzzle portionthereof, a tube having lugs fitted on the tongues of the barrel, setscrews in the lugs for clamping the tube to the tongues of the barrel, asleeve having eccentric rings on ends thereof positioned in the extendedend of the tube, a disc having an opening therethrough positioned in thesleeve, a bushing threaded in the sleeve for securing the disc therein,a gripping ring having a collar thereon threaded on the outer surface ofthe tube, and a lock nut having an annular flange thereon that isthreaded on the collar on the gripping ring on the outer surface of thetube for locking the sleeve in adjusted positions therein, the tubehaving a window in the upper surface for displaying indicia indicatingthe position of the opening in the disc of the sleeve.

References Cited in the file of this patent UNITED STATES PATENTS870,272 Burton Nov. 5, 1907 1,009,282 Cobb Nov. 21, 1911 2,125,932Lennon Aug. 9, 1938 2,424,011 De Gramont July 15, 1947 2,456,214 PoeDec. 14, 1948 2,486,940 Garber et al. Nov. 1, 1949 2,913,826 Petty Nov.24, 1959

